Catcher for rolling mills



' Aa .19,193o. BOEUF 1,773,463

CA' IGHER FOR ROLLING MILLS I Filed Oct. 27, 928 5 Sheets-Sheet 1 ly filJl/efioeuf Aug; 19, 1930. o. J. LE BOEUF CATCHER FOR ROLLING MILLS 3 Sheets-Sheet 2 Filed Oct. 27,

Ailg. 19,1930. 0.1.1.5. BOEUF 1,113,463

QATCHER FOR ROLLING MILLS Filed Oct. 27, 1928 3 Sheets-Sheet 3 201 e a. a anism 1s "caused tt1lt,iso that inreceivlng the bars,"'the bars move inwardly thereon and be readilydischargedr.

Patented A 'fie, 1930 oscm nonuneorleenm INDIANA,

i mime.assess nts?.. A f

f This'invention relates to catchers for rolling-millsf and linoreflparticularly' to a device fo'rfreceiving hairs from the rolls or a mill and returning these bars over-the upper roll ggto the front of the machine, so that*they" the rotation of the :rou wm cause-the slab e 'to'ibe delivered-tea point where a Workman can return it"lto the rolls. I

v e further objectof the inventionfis to provide a novel and improved lifting 'mechanism .having associated therewith latching.

means by means of which the lifting'jmechare securely held and in discharging the bars,

the bars are slid outwardlmfso that they may A still further ob ect oi? the invention "is' to'provide a novel and improvedcontrol mechanism for the latching mechanism above referred to.

7 These and other objects I. attain jbyfthe" construction shown in the accompanying; drawiligslw herein for-the purpose 'Of llluS" 'tration' is shown a preferred embodiment of V V i 3 theshaft-22,the rear end'ofithertongue will 7 my invention and vv'herein V l 3 I l Figure 1 is a'side elevati'onpartially'insec- 5 tion showing a catcher for rolling mills construct'ed in accordahce with my invention;

' Figure 2 s a plan viewthereoif, parts l oeing removed Y I showing the engagement withfthe tongue Figure "5 is 'a bottom plan view-brats tongue.

the upper roll at a' point in advance-of the center, so that front to baclrof the tongue and t Figure 3 man enlarged longitudinalsec-i- 'Referring n0w -more particulailyito the drawings, the numerals '10 and 11 designate the upper and lower rolls of a ro l'limgiflina- "chine "and12 spaced rest'hars': uponfiw hich the slabor bar'l3 delivered fromtherollsiis *1 discharged-[In aecord'ance with my driventiong'I' dispose at the discharge si de 'of thef rolls and in spaced" parallel relation" thereto ashaft 14, Whichm'ay be conveniently driwen by a motor 15 at a relatively slow speed. Dh is shaft has -secured thereto spaced spiders 16:. halving a-hgnedi pairs of arms lT-with each of which a t'ongue 18 "isassociated; The I tongue "18' is of slightly (less-length than the distanc between adjacent resumes and is, 0 I in the formof anelongated hodyhaving its; 7 forward edgetapered, as at l 9, andpro yided adjacentits oppositeen'd edges-With guides versely'extending shaft-21 anclp'ivotedfto the guides centrally thereof is ashaftQQ hau ing; l

a cranl'z' 23' to which the shaft 2 1 is, linked in such manner that this shafti may sl'id'effrom omene-"side to another ofthe pivots or 'beari ngs of :the

s'h aftv22; The ends of the shaft 21" are pi v i oted in the arm '17, and 'itIW'ill be obvious that vvhen this shaft; is disposed rearwardly upon the tongue with respe'ct ato the tbeainings of the sha'fftQQ,ithmdterhnd ofZthe tongue "will I tend" to -mov'e downwardly; by .L gravity;

"while, iithe-shaft is. disposed at the outer end of its movement andfbeyond the hearningsf of tend to move downwardly Thy gravity; xllhe I rear end of the tongue has secured thereto a purpose presentlytozappear.

Eacharm has pivoted thereto'ailateh fle men t 25 which is in 'the formio'f a ha r havg5 ing a nose 27, Which proj ects forwardly when i the l atch depends from theamriandfwhich, 1 at its unction with the bar, isproveded with above '28 t v suf ficie'nt to" receive the latdh' :pin Q kV-hffthe up 11 its lower face; whidh isii-otfiassize a of the shaft 31, so that when the elliptical gear associated tongue. Pivoted to the bar above the lower edge of this nose is a latch 29 which is adapted to obstruct the mouth of the cove 28 at times when the bar depends and during movement of this bar in a clockwise direction from this depending position to a position where the bar is vertically directed and extends upwardly from the arm 17. A stop 30 carried by the latch and engaging the bar prevents the latch from overswinging its locking position and the weight of the latch is such that it may be displaced when the pin 24 engages therewith to permit this pin to enter the cove 28, after which the latch swings to the cove-closing position and prevents'the escape of the pin.

The latch is mounted upon a shaft 31, which extends through the arm and is provided atv the outer face thereof with a pair of cranks 32 and 33. At the inner end of each arm is disposed a pivot having mounted thereon a substantially elliptical interrupted gear 3 1 to which is secured an eccentric pin 35 having a crank 36. The crank and pin are connected by links 37 with the cranks 32 and 33 is rotate-d, the shaft 31 will be rotated, causing the latch to rotate in a clockwise direction.

A shaft 38, which may be also driven-from the motor through a cross shaft 39 with which the shaft 38 has chain and sprocket connections 40 and having chain and sprocket con nections with the motor, as at 41, has at its inner end a gear 42 aligned with the elliptical gears 34 and adapted to engage therewith during certain'periods of the rotation of the shaft 14. Arcuate guides 43 are providedwith which'the free edges of the tongues 18 coact from apoint where they are diametrie cally opposed to the rolls- 10 to a point adj acent the rolls and on the downward 180 of their travel. These guides tilt the tongue 18 to provide for engagement'of the latchbars therewith, as will hereinafter more fully appear.

In the operation of the device, assuming;

a given tongue to be at the limit of its movement which is diametrically opposed to the rolls, the tongue is depending with the pivot shaft 21 disposed at the inner end thereof.

' The latch pin 24 which is disposed inwardly 0f the ends of the slides thus lies above the disposed. At this time, the latch 25 is positioned to swing past the pivot of the tongue and the latch pin thereof, so that it lies rearwardly of this latch pin and in a position to receive the same.

As the arm continues its movement, the tongue 19 comes into engagement with the bar 13. This causes the forward upward movement of the tongue to be arrested, with the result that this tongue is first forced downwardly so that its latch pin is engaged .by the latch and then slightly rearwardly.

At this time, the gear 12 engages the gear 34, causing practically a three-fourths revolution thereof .while the arm is moving through approximately 40. This movement causes the rear end of the tongue to be first drawn inwardly and downwardly, with the result'that the bar 13 is withdrawn from the supports 12 and carried by the tongue. The withdrawal of the tongue is sufiicient to cause it to clear the upper roll 10 while supporting the bar 13. As the arm reaches a position where the outer .end of the tongue is above the upper end of the roll, the tongue is forced forwardly, with the result that the pivot of the tongue and the pivotal connection of this tongue with the arm are displaced in. a manner permitting the forward end of the tongue to drop down, disengaging the tongue from the latch,'the auxiliary latch- I ing member of which has at this time fallen away by gravity, so that a sudden sharp tilting movement takes place and the bar 13 is slid from the tongue onto the upper surface of the roll, by means of which it is returned to the front of the machine for handling by the attendants. r

.It will be obvious that the structure employedis capable of a considerable range of change and modification without in any manner departing from the spirit of the invention and I accordingly do not limit myself to such structure particularly illustrated and described except as hereinafter claimed.

- I claim 1. In a. catcher for a rolling mill and in combination with the rolls and the bar receiving rests of the mill, .a rotatably mounted member, .a tongue adapted to engage the bar upon the rests, means connecting the tongue to said member for rotation therewith and for pivotal and forward and rearward movements with respect thereto, means adapted on the engagement of the tongue with the bar to latch the tongue to said member so as to permit the tongue to carry the bar from the rests above the upper roll, and means adapted after the tongue is latched to shift it rearwardly with respect to said 'member so as to clear the upper roll and to thereafter shift it forwardly so as to cause it to overlie the upper roll and discharge the bar.

3 2. In a catcher for a rolling mill and in upon the rests,

to operate the latch to shift longitudinally combination with the rolls and the bar receiving rests of the mill, a rotatably mounted member, a tongue adapted to engage the bar means connecting. the tongue to said member for rotation therewith and for pivotal and forward and rearward movements with respect thereto, a latch movably connected to said member and adapted on the engagement of the tongue with the bar to hold the tongue so as topermit it to carry the bar from the rests above the upper roll, and means adapted to operate the latch so as to shift the tongue rearwardly to permit it to pass the upper roll and adapted thereafter the tongue forwardly to cause it to overlie the upper roll and discharge the bar;

3.. In a catcher for rolling mills and in combination with the rolls of a rolling mill and rest bars receiving a slab or bar from the rolls at the rear thereof, a rotating structure including pairs of arms each provided With a tongue adapted to engage a bar disposed upon the rest bars, said tonguesbeing' shiftable upon the arms, a rotating latch associated with each arm and adapted to engage a latch pin carried by the tongue upon engagement of the tongue with the bar, and means for positively rotating said latch after its engagement withthe tongue to thereby cause the tongue to first move inwardly to clear the upper roll and then outwardly to overlie the upper roll and position the bar for discharge thereover.

4. In a catcher for rolling mills and in combination with the rolls of a rolling mill and rest bars receiving a slab or bar from the rolls at the rear thereof, a rotating structure including pairs of arms each provided with a tongue adapted to engage a bar disposed upon the rest bars, said tongues ,being longitudinally shiftable upon the arms, a rotating latch associated with each arm and adapted to engage a latch pin carried by the tongue upon engagement of the tongue with the bar, and means for positively rotating said latch after its engagement with the tongue to thereby cause the tongue to first move inwardly to clear the upper roll and then outwardly to overlie the upper roll ant position the bar for discharge thereover, said latch automatically releasing the tongue when the tongue is in the last named position to permit the outer end of the tongue to dro 5 In acatcher for rolling mills and in combination with the rolls of a rolling mill and rest bars receiving a slab or bar from the rolls at the rear thereof, a rotating structure including pairs of arms each provided with a tongue adapted to engage a bar disposed upon the rest bars, each tongue having a longitudinally extending guide slot, pivots carried by each pair of arms and extending into the guide slot, a latch pin carried by the the rolls at the rear thereof, a rotatingstructureincluding pairs of arms each provided with a tongue adapted to engage a bar disposed upon the rest bars, said tongues being longitudinally shiftable upon the arms, a rotating latch associated with each arm and adapted to engage a latchpin carried by the tongue upon engagement of the tongue with the bar, means for-positively rotating said latch after its engagement withthe tongue to thereby causethe tongue to first move inwardly to clear the upper roll and then outwardly to overlie the upper roll and position the bar for discharge thereover, comprising an elliptical gear link-connected with the latch and supported by the structure and a rotating gear with which'said elliptical gear engages at a predetermined point in'the rotation of said structure.

7. In a catcher for combination with the rolls of a rolling mill and rest bars receiving a slab or bar from the rolls at the rear thereof, arotating structure including pairs of armseach'provided with a tongue adapted to engage a bar disposed upon the restbars, saidtongues being longitudinally shiftable upon the arms, a rotating latch associated with each arm and adapted to engage a latch pin carried by the tongue upon engagement of the tongue with the bar, means for positively rotating said latch after its engagement with the tongue to thereby cause the tongue to first move inwardly to clear the upper roll and then downwardly to overlie the upper rolland position the bar for discharge thereover comprising an elliptical gear link-connected with the latch and supported by the structure and a rotating gearwith which said elliptical gear engages at a predetermined point in the rotation of said structure, said latch automati- 8. In a catcher for rolling mills and in combination with the rolls of a rolling mill rolling mills and in i and rest bars receiving a slab or bar from the rolls at the rear thereof, a rotating struc-- ture'including pairs of arms each provided with a tongue adapted to engage a bar disposed upon the rest bars, each tongue having a longitudinallyextending guide slot, pivots carried bye-each pair of arms and extending into the guide slot, a latch pin carried by the inner endof each tongue, latch mechanism carried by eachpair of arms adapted to en-- signature.

OSCAR J. LE BOEUF. 

